منابع مشابه
Alterations of color vision and central visual field in patients with Vogt−Koyanagi−Harada syndrome
PURPOSE To investigate the changes of color vision and central visual field in a cohort of patients with Vogt-Koyanagi-Harada (VKH) syndrome. METHODS Sixteen VKH patients (32 eyes) were enrolled in this study. All the patients were treated with immunosuppressive agents. The best visual acuity, visual field testing and color vision testing were available from the records in all these patients ...
متن کاملAcquired color vision and visual field defects in patients with ocular hypertension and early glaucoma
PURPOSE To study acquired color vision and visual field defects in patients with ocular hypertension (OH) and early glaucoma. METHODS In a prospective study we evaluated 99 eyes of 56 patients with OH without visual field defects and no hereditary color deficiencies, followed up for 4 to 6 years (mean = 4.7 +/- 0.6 years). Color vision defects were studied using a special computer program for...
متن کاملColor perception in the intermediate periphery of the visual field.
Color perception changes across the visual field. It is best in the fovea and declines in the periphery. Sensitivity to red-green color variations declines more steeply toward the periphery than sensitivity to luminance or blue-yellow colors. It is thought that this decline is due to the increasing size of receptive fields of parvocellular retinal ganglion cells and the unselective or random co...
متن کاملHarnessing color vision for visual oximetry in central cyanosis.
Central cyanosis refers to a bluish discoloration of the skin, lips, tongue, nails, and mucous membranes, and is due to poor arterial oxygenation. Although skin color is one of its characteristic properties, it has long been realized that by the time skin color signs become visible, oxygen saturation is dangerously low. Here we investigate the visibility of cyanosis in light of recent discoveri...
متن کاملevaluation of contrast sensitivity, color vision and visual acuity in patients with and without diabetes
purpose : to investigate the discriminative ability of contrast sensitivity (cs), color vision and best corrected visual acuity (bcva) in detecting functional losses in diabetic participants with and without retinopathy methods : in this cross sectional study we examined 105 patients in khatam-al-anbia eye hospital of mashhad university of medical sciences including 70 diabetic patients (35 wit...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Fundamentals and Materials
سال: 2002
ISSN: 0385-4205,1347-5533
DOI: 10.1541/ieejfms.122.513